I want to preface this by saying this is not specifically targeted at you but I am just responding to the situation you described as it raises some important things to be considered by others. If you are happy with the settlement you got, then that's fine.
Now that that is out of the way, I have to say that having to split assets with an ex who was a stay at home mum is a doubly raw deal. Why? Because she received board, food, clothes, a car, holidays, all bills paid and a comfortable life all for zero effort (you may say how can I even say this? I respond by saying how can she take you to the cleaners after all you have done). If she had been a working mum, she would have done most of the things she would have been doing as a stay at home mum anyway but with the added stress brought on by having a job. Winner: stay at home mum.
And despite all the free things she received during the marriage, you now have to part with half your assets that you worked for when the inevitable divorce comes around. And that is despite the very comfortable lifestyle you provided. If anything, such an ex who was looked after during the marriage should say "he is a good man and provided for me during the years of our marriage, I am grateful and I don't want anything, he has done enough". But never a woman has uttered these words when big cash and prizes are involved at the end of the marriage and they will do their best to take as much as they possibly can. A mate of mine lost 3 investment properties to his ex, with zero contribution from her (she was a stay at home mum). Winner: wife.
Conversely, an ex who used to work would have likely contributed to the household expenditure including the mortgage on the house half of which will be surrendered to her upon divorce. So in a way, she gets her half that she contributed to during the marriage (assuming that you both earned equally). This is a far better deal than to have a stay at home wife/mum. Winner: husband and wife (equal contribution equals lesser chances of the divorce turning nasty).
Of course they had to. It was their responsibility to raise the children regardless of your absence or presence (lots of single mums raise children in the absence of the fathers). It is also why the courts give custody to mothers and there has to be very compelling circumstances for the courts not to do so (druggie, abusive etc). Fathers never get commended for raising children and neither should mothers.
What did they really sacrifice though? Not having to go to work and do the daily grind like men do? That is a privilege not a sacrifice. If she won lotto, she would most likely quit her job. If she had been working, it would have been to put food on the table, a shelter over your heads, holidays etc. But as stay at home mums, they already get all that without having to work for it. Me thinks such stay at homes mums should be grateful to have everything provided for them without enduring the daily grind. Winner: wife.
In regards to financial sufficiency, I don't think they sacrificed that by being stay at home mums. They will became self sufficient anyway upon divorce when they take half of your assets that YOU did the daily grind for. Winner: wife.
Why should a man have to share his assets then work hard to earn it back? Most men cannot do so, especially depending on the job, especially if it's a physically demanding job that only gets harder and takes a toll on his body. Many many men have not been able to recover from divorce and from losing their house and other assets. Winner: wife.
This means you are just back to square one and have broken even but have lost time. And why help them with money when they benefitted financially from you upon divorce?
I'm not a believer in love that a woman has for a man. A man is only loved on the condition that he provides something of value. Love is a long dead construct evidenced by high divorce rates. Most divorces are initiated by women.
On a word of caution boys, look up starter husbands. It is often said that men are in love and women are in business.
I've often challenged women to state what benefit a man gets from marriage and none have been able to provide a sensible answer.
TL;DR
Dont get married.
/Sorry for the long post. Hopefully it makes sense as I am doing this late at night.